Can an employee also be an author? Can a person be neither an employee nor an author?
Define each of the following terms. In addition, provide an example of each term. Attribute Inheritance Supertype Subtype Generalization Composite Key Total Completeness Partial Completeness Surrogate Key Disjoint Subtype Overlapping Subtype Part 2: Analyze a Supertype/Subtype ERD (a Subset of a Publisher Database ERD) List the attributes for Author. List the attributes for Employee. For each entity […]